2117198792 has 8 divisors (see below), whose sum is σ = 3969747750. Its totient is φ = 1058599392.

The previous prime is 2117198767. The next prime is 2117198803. The reversal of 2117198792 is 2978917112.

It can be written as a sum of positive squares in only one way, i.e., 1064455876 + 1052742916 = 32626^2 + 32446^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132324917 + ... + 132324932.

Almost surely, 2^2117198792 is an apocalyptic number.

It is an amenable number.

2117198792 is a deficient number, since it is larger than the sum of its proper divisors (1852548958).

2117198792 is a wasteful number, since it uses less digits than its factorization.

2117198792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264649855 (or 264649851 counting only the distinct ones).

The product of its digits is 127008, while the sum is 47.

The square root of 2117198792 is about 46013.0285028056. The cubic root of 2117198792 is about 1284.0656032189.

The spelling of 2117198792 in words is "two billion, one hundred seventeen million, one hundred ninety-eight thousand, seven hundred ninety-two".